Question about 1999 Ford Escort

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Water leaking from my car. We've put in a new thermostat and a freeze plug had a hole rusted through it. We replaced that. We also got a new radiator cap. The car is still leaking and I'm filling it every day with water. The freeze plug was on the right side. Is there one on the left side that could be leaking?

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There is usually more than one frost/freeze plug .

Posted on Aug 01, 2009


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Posted on Jan 02, 2017


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Could a freezeplug blow out?

freeze plugs ( welsh plugs ) rust out and will leak water under pressure . they are replaceable with some difficulty-- working space required
water pumps will leak out a small hole under the housing behind the pulley to stop the leaking pump seal from putting water into the bearing-- replace is the only real fix as reconditioning is almost as expensive as a new pump
to find the leak have a pressure test done on the cooling system as it reveal where the leak is
if you have plastic radiator tanks then they are known to crack or even come loose of the cores
a pressure test will reveal all this

Aug 28, 2015 | 2001 Ford Escape

2 Answers

My Chrysler Concorde 2000 3.2? Overheated and melted a hole in the water resivour tank,so we replaced that, it still got hot fast, so we replaced thermostat, then it started making a loud noise it sounds...

The whistling noise is steam. The problem is you never attacked the source of the problem. What you need to do now is drain your radiator completely at opening T-spicket at the bottom of the radiator. While you drain with engine off, run your water hose on top, to flush out the radiator. Then run to the Auto store and buy "radiator flush" -- follow directions. After flushing out the radiator flush, close the T-spicket, and fill with NEW anti-freeze. By enough to fill to the very top. Mix the anti-freeze with water per instructions to your environmental weather.
Buy a new radiator cap which could have caused the problem in the first place by not allowing the correct pressure to blow off. Being a 2000 car is a little early for radiator problems, but an incorrect anti-freeze solution causes radiators to fail prematurely.. Better to have more than less because anti-freeze keeps the radiator from corroding.
Your radiator never cooled the water sufficiently, and boiled much of the water out, hence it got so hot that it would melt the water tank. The Thermostat could well have been the cause because it got corroded from the inept ant-freeze mixture. Did you find rust on the Thermostat ? If so it was the case. If not the radiator has lost cooling either by low water or the cores have become plugged up, in that case you will need a new radiator. See if the flush loosens the rust within the cores before buying an expensive radiator. Check the water hoses if leaking cooling. Run the car allow the engine to become hot before accepting that your water hoses are fine. Because heat expand everything, and may not leak until after the expansion.

May 10, 2014 | Cars & Trucks

1 Answer

Have frost plug with pin hole leak, whats the best way to remove plug on a 4.6 northstar, 1994 eldorado with out hurting the head, i had removed alternator to get access to the plug, please help!!!

Note how far the plug is recessed in its hole. You will want to tap in the new plug to the same depth.
Use a hammer and small punch. Put the punch at the edge, not on the lip of plug, but out near the edge. Tap on it until it starts moving inward, the opposite side will be pushed out. Grab onto it with a pair of pliers and wiggle it out of the hole.
Clean the recess of rust and dirt, place the new plug in and tap it in evenly to the depth of the old plug. It may help to use a socket that fits inside the plug as a driver to drive it in evenly.

Keep an eye on the other freeze plugs. When one rusts through, others may follow. You should drain all the old coolant out, flush the engine and radiator, and put in new coolant, new thermostat too is a good idea. If rust is bad, consider a professional flush-they can do a much better job than a garden hose. Your radiator may need attention, too.
Good luck.

Oct 03, 2013 | Cadillac Eldorado Cars & Trucks

1 Answer

Freeze plup location

Back of engine, eh? The freeze plugs (3, maybe 4 on that back side) will be on the engine block, below the cylinder head, and below where the exhaust manifold mounts up. Look in back of the exhaust manifold for the plugs. Check for indication of leaking, it should be evident. If you have an engine block heater installed in one of the freeze plug holes, that may have loosened and started leaking. If you find a plug that needs replaced, put a stout screwdriver or punch on the freezeplug, not at the center of plug but to the edge, and whack it good. That edge will go in and the other side will stick out- grab with pliers and remove. Clean the area well to remove rust and scale where freezeplug seals in the block. It will be hard, possibly, to put in a new freeze plug with everything in the way. So buy a rubber expansion plug at the parts store-easy to install, just put a wrench on it to tighten. Take your old freezeplug with you to get the right sized expansion plug.
Good luck, hope you find it.

Dec 23, 2012 | 2006 Scion tC

1 Answer

What causes a coolant leak

Bad radiator hoses upper or lower, hole in radiator, bad thermostat housing gasket, leaking head gaskets, or rusted out engine freeze plugs.

Sep 09, 2012 | 2006 Subaru Outback

1 Answer

Over heating

over heating can be caused by a number of things. your water pump could have died or the gaskets could have went on the water pump spilling your antifreeze every where. in which case you need to replace the water pump and gaskets. when you change the water pump you should replace the thermostat because they usually fail at the same time. your thermostat could have locked closed. in which case replace the thermostat. i recommend getting a fail safe thermostat so when it fails it gets locked open and then the car dose not overheat. your belt could have broke so your water pump wont turn. replace the belt. your radiator or hoses could be clogged with rust and sediments in which case you need to flush your radiator and change the anti freeze. you may be just low on anti freeze... so fill it up and see if it leaks anywhere. your tubes could have came off, be loose, or cracked and leaking; so replace or tighten them. your radiator could have a hole in it or leaking some where.. replace radiator. if you drive on dirt roads a lot the radiator could be full of sand and dirt could be full of mud if taken off road. just rinse the radiator out with soap and water. are your floor mats full of water or antifreeze? you could have a bad heater core. replace heater core. or you can cheat and take the two tubes off the heater core and splice them together. (which will leave you with no heat). your fan may have gone out so it wont cool the radiator. the last thing i can think of is very low or no oil in the motor. top off the oil.

Jan 06, 2011 | 1994 Cadillac Eldorado

2 Answers

My 2000 chrysler cirrus had a small undetectable water leak. My mechanic 1st said it was the freeze plugs rusted, then he replaced the radiator cap, thermostat, and gasket seal. I drove it 20 miles and...

sounds like a snow job
should have pressure tested the system on the hoist and all leaks fixed the first time round
the cap , thermostat and whatever gasket that was replaced was not necessary as the cap and thermostat would not be the leak
ask what the long tube is for as radiator and heater hoses can be got from a local parts shop or dealer spares
next time use accredited service centers and get a better job done cheaper

Jun 26, 2017 | 2000 Chrysler Cirrus

1 Answer

Water leaking from under car, mostly coming from right side toward back of engine. Had radiator replaced along with thermostat and hoses. Is thermostat cover bad?


Oct 19, 2010 | 2002 Mitsubishi Galant

2 Answers

Overheating 1985 k5 350 engine, leaking coolant, all water hoses, thermostat & waterpump replaced. possible leak above starter, also maybe a freeze plug, leak hard to find. please advise

Never, never, never use 100% water in a cooling system. Always. always, always add 50/50 antifreeze/water solution so that the CASTING pluggs don't rust or freeze (they are NOT freeze pluggs). If it froze with water in it you have a 75% chance that the motor is junk; 25% chance that you can fix it by replacing the CASTING plug. I drill a small hole in them and screw my sliding hammer in and pop them out (nearly impossible in the vehicle). Adding water to a cooling system is NOT cost effective. Ray (garage owner)

Sep 20, 2010 | 1985 Chevrolet S-10 Blazer

1 Answer

Coolant loss

From what you described I suspect you have a hole in a freeze plug. They tend to rust out over the years, especially if you’re running a high percentage water and a low percentage antifreeze for your coolant. Try to fill your radiator when the engine is cold. If you have a hole in a freeze plug you won't be able to keep the radiator full. The water will just keep running out the hole. If you can fill the radiator and don't see any leaks, it's probably not a freeze plug. It may be a sliced hose that will only leak when the engine is warm. If you do have a leak, try to look under the car and see where the water is coming from. Freeze plugs look like round shallow indentation in the engine block. They're usually about 1.5 inches in diameter. If you find a leaking freeze plug you can usually pop it out by driving a large screwdriver into the hole and then use the screw driver to pry the metal freeze plug out. Buy a new freeze plug of the same size at an auto parts store and tap it back into the circular opening. Do your best to clean the edges of the opening first. Put one end of a deep well socket that's slightly smaller than the freeze plug against the outer wall of the freeze plug and tap on the other end of the socket with a hammer to drive the plug into the opening in the engine block. This will help you to drive it in straight. If there's enough room to swing a hammer, freeze plugs usually aren't too difficult to replace. However, if there's no working room they can be very difficult to replace. If this is the case you may want to take it to a garage.

Jun 17, 2009 | 1997 Oldsmobile Achieva

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